Question

length of a rectangular hall 15 m and breadth is 20 m .2.5 m board corridor is out side the hall along all sides.find the area of corridor

Answer 1

Step-by-step explanation:

l=15+2.5+2.5=20

b=20+2.5+2.5=25

area of rectangle =l×b

20×25

500msquare

Answer 2

outer wall

l=15

b=20

inner wall

l=12.5

b=18.5

area of corrider=outer wall area -inner wall area

15×20-12.5×18.5

300-231.25

=68.75

The area of corrider =68.75